Map of Sangamon County, Illinois

Sangamon County is located in the center of the U.S. state of Illinois. According to the 2010 census, it had a population of 197,465. Its county seat and largest city is Springfield, the state capital.

Sangamon County is included in the Springfield, IL Metropolitan Statistical Area.

Sangamon County overview:
Name:	Sangamon County
FIPS code:	17-167
State:	Illinois
Founded:	1821
Named for:	Sangamon River
Seat:	Springfield
Largest city:	Springfield
Total Area:	877 sq mi (2,270 km²)
Land Area:	868 sq mi (2,250 km²)
Total Population:	197,465
Population Density:	230/sq mi (87/km²)
Website:	www.co.sangamon.il.us

Sangamon County location map. Where is Sangamon County?

Sangamon County location on the U.S. Map. Where is Sangamon County. — Location of Sangamon County in the the United States.

Sangamon County location on the Illinois map. Where is Sangamon County. — Location of Sangamon County in Illinois.

History

Sangamon County was formed in 1821 out of Madison and Bond counties. The county was named for the Sangamon River, which runs through it. The origin of the name of the river is unknown; among several explanations is the theory that it comes from the Pottawatomie word Sain-guee-mon (pronounced “sang gä mun”), meaning “where there is plenty to eat.” Published histories of neighboring Menard County (formed from Sangamon County) suggest that the name was first given to the river by the French explorers of the late 17th century as they passed through the region. The river was named to honor “St. Gamo”, or Saint Gamo, an 8th-century French Benedictine monk. The French pronunciation “San-Gamo” is the legacy.

Prior to being elected President of the United States, Abraham Lincoln represented Sangamon County in the Illinois Legislature. Lincoln, along with several other legislators, was instrumental in securing Springfield, the Sangamon County seat, as the state’s capital. Sangamon County was also within the congressional district represented by Lincoln when he served in the US House of Representatives. Another legislator who represented Sangamon County was Colonel Edmund Dick Taylor, also known as “Father of the Greenback”. The prominent financiers and industrialists Jacob Bunn and John Whitfield Bunn were based in Springfield, Sangamon County, Illinois, as well as in Chicago, during the nineteenth century and the early twentieth century. The careers of these men and the people with whom they collaborated helped to shape much of the history and development of Sangamon County, Illinois.

Sangamon County from the time of its creation to 1823
Sangamon County between 1823 and 1825
Sangamon County between 1825 and 1839
Sangamon in 1839, when the creation of Logan and Menard Counties reduced it to its present borders

Sangamon County Road Map

Sangamon CountyStreet Map. — Street map of Sangamon County, Illinois. Source: OpenStreetMap (OSM)

Sangamon CountyMap — Sangamon Countypolitical map.

Geography

According to the U.S. Census Bureau, the county has a total area of 877 square miles (2,270 km), of which 868 square miles (2,250 km) is land and 8.7 square miles (23 km) (1.0%) is water.

Climate and weather

In recent years, average temperatures in the county seat of Springfield have ranged from a low of 17 °F (−8 °C) in January to a high of 87 °F (31 °C) in July, although a record low of −24 °F (−31 °C) was recorded in February 1905 and a record high of 112 °F (44 °C) was recorded in July 1954. Average monthly precipitation ranged from 1.62 inches (41 mm) in January to 4.06 inches (103 mm) in May.

Major highways

Interstate 55
Interstate 55 Business Loop
Interstate 72
U.S. Route 36
Illinois Route 4
Illinois Route 29
Illinois Route 54
Illinois Route 97
Illinois Route 104
Illinois Route 124
Illinois Route 123
Illinois Route 125

Transit

Sangamon Mass Transit District
Springfield station
List of intercity bus stops in Illinois

Adjacent counties

Menard County – north
Logan County – northeast
Macon County – east
Christian County – southeast
Montgomery County – south
Macoupin County – south
Morgan County – west
Cass County – northwest

National protected areas

Lincoln Home National Historic Site

State protected areas

Sangchris Lake State Recreation Area